Improved node statistics. Added overview for single nodes and replaced mockup values with api fetched values for nodes list

MoonlightServers.ApiServer/Http/Controllers/Admin/Nodes/StatisticsController.cs

@@ -0,0 +1,90 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using MoonCore.Exceptions;
+using MoonCore.Extended.Abstractions;
+using MoonlightServers.ApiServer.Database.Entities;
+using MoonlightServers.ApiServer.Services;
+using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics;
+
+namespace MoonlightServers.ApiServer.Http.Controllers.Admin.Nodes;
+
+[ApiController]
+[Route("api/admin/servers/nodes")]
+[Authorize(Policy = "permissions:admin.servers.nodes.statistics")]
+public class StatisticsController : Controller
+{
+    private readonly NodeService NodeService;
+    private readonly DatabaseRepository<Node> NodeRepository;
+
+    public StatisticsController(NodeService nodeService, DatabaseRepository<Node> nodeRepository)
+    {
+        NodeService = nodeService;
+        NodeRepository = nodeRepository;
+    }
+
+    [HttpGet("{nodeId:int}/statistics")]
+    public async Task<StatisticsResponse> Get([FromRoute] int nodeId)
+    {
+        var node = await GetNode(nodeId);
+        var statistics = await NodeService.GetStatistics(node);
+
+        return new()
+        {
+            Cpu = new()
+            {
+                Model = statistics.Cpu.Model,
+                Usage = statistics.Cpu.Usage,
+                UsagePerCore = statistics.Cpu.UsagePerCore
+            },
+            Memory = new()
+            {
+                Available = statistics.Memory.Available,
+                Total = statistics.Memory.Total,
+                Cached = statistics.Memory.Cached,
+                Free = statistics.Memory.Free,
+                SwapFree = statistics.Memory.SwapFree,
+                SwapTotal = statistics.Memory.SwapTotal
+            },
+            Disks = statistics.Disks.Select(x => new StatisticsResponse.DiskData()
+            {
+                Device = x.Device,
+                DiskFree = x.DiskFree,
+                DiskTotal = x.DiskTotal,
+                InodesFree = x.InodesFree,
+                InodesTotal = x.InodesTotal,
+                MountPath = x.MountPath
+            }).ToArray()
+        };
+    }
+
+    [HttpGet("{nodeId:int}/statistics/docker")]
+    public async Task<DockerStatisticsResponse> GetDocker([FromRoute] int nodeId)
+    {
+        var node = await GetNode(nodeId);
+        var statistics = await NodeService.GetDockerStatistics(node);
+
+        return new()
+        {
+            BuildCacheReclaimable = statistics.BuildCacheReclaimable,
+            BuildCacheUsed = statistics.BuildCacheUsed,
+            ContainersReclaimable = statistics.ContainersReclaimable,
+            ContainersUsed = statistics.ContainersUsed,
+            ImagesReclaimable = statistics.ImagesReclaimable,
+            ImagesUsed = statistics.ImagesUsed,
+            Version = statistics.Version
+        };
+    }
+    
+    private async Task<Node> GetNode(int nodeId)
+    {
+        var result = await NodeRepository
+            .Get()
+            .FirstOrDefaultAsync(x => x.Id == nodeId);
+
+        if (result == null)
+            throw new HttpApiException("A node with this id could not be found", 404);
+
+        return result;
+    }
+}

MoonlightServers.ApiServer/Services/NodeService.cs

@@ -49,16 +49,10 @@ public class NodeService
 
     #region Statistics
 
-    public async Task<StatisticsApplicationResponse> GetApplicationStatistics(Node node)
+    public async Task<StatisticsResponse> GetStatistics(Node node)
     {
         using var apiClient = CreateApiClient(node);
-        return await apiClient.GetJson<StatisticsApplicationResponse>("api/statistics/application");
-    }
-
-    public async Task<StatisticsHostResponse> GetHostStatistics(Node node)
-    {
-        using var apiClient = CreateApiClient(node);
-        return await apiClient.GetJson<StatisticsHostResponse>("api/statistics/host");
+        return await apiClient.GetJson<StatisticsResponse>("api/statistics");
     }
 
     public async Task<StatisticsDockerResponse> GetDockerStatistics(Node node)

MoonlightServers.Daemon/Helpers/HostSystemHelper.cs

@@ -1,11 +1,21 @@
 using System.Runtime.InteropServices;
+using Mono.Unix.Native;
 using MoonCore.Attributes;
+using MoonCore.Helpers;
+using MoonlightServers.Daemon.Models;
 
 namespace MoonlightServers.Daemon.Helpers;
 
 [Singleton]
 public class HostSystemHelper
 {
+    private readonly ILogger<HostSystemHelper> Logger;
+
+    public HostSystemHelper(ILogger<HostSystemHelper> logger)
+    {
+        Logger = logger;
+    }
+
     public string GetOsName()
     {
         if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
@@ -45,5 +55,209 @@ public class HostSystemHelper
         return "Unknown";
     }
 
+    #region CPU Usage
 
+    public async Task<CpuUsageDetails> GetCpuUsage()
+    {
+        var result = new CpuUsageDetails();
+        var perCoreUsages = new List<double>();
+
+        // Initial read
+        var (cpuLastStats, cpuLastSums) = await ReadAllCpuStats();
+
+        await Task.Delay(1000);
+
+        // Second read
+        var (cpuNowStats, cpuNowSums) = await ReadAllCpuStats();
+
+        for (var i = 0; i < cpuNowStats.Length; i++)
+        {
+            var cpuDelta = cpuNowSums[i] - cpuLastSums[i];
+            var cpuIdle = cpuNowStats[i][3] - cpuLastStats[i][3];
+            var cpuUsed = cpuDelta - cpuIdle;
+
+            var usage = 100.0 * cpuUsed / cpuDelta;
+
+            if (i == 0)
+                result.OverallUsage = usage;
+            else
+                perCoreUsages.Add(usage);
+        }
+
+        result.PerCoreUsage = perCoreUsages.ToArray();
+        
+        // Get model name
+        var cpuInfoLines = await File.ReadAllLinesAsync("/proc/cpuinfo");
+        var modelLine = cpuInfoLines.FirstOrDefault(x => x.StartsWith("model name"));
+        result.Model = modelLine?.Split(":")[1].Trim() ?? "N/A";
+
+        return result;
+    }
+
+    private async Task<(long[][] cpuStatsList, long[] cpuSums)> ReadAllCpuStats()
+    {
+        var lines = await File.ReadAllLinesAsync("/proc/stat");
+
+        lines = lines.Where(line => line.StartsWith("cpu"))
+            .TakeWhile(line => line.StartsWith("cpu")) // Ensures only CPU lines are read
+            .ToArray();
+
+        var statsList = new List<long[]>();
+        var sumList = new List<long>();
+
+        foreach (var line in lines)
+        {
+            var parts = line.Split(' ', StringSplitOptions.RemoveEmptyEntries)
+                .Skip(1) // Skip the "cpu" label
+                .ToArray();
+
+            var cpuTimes = parts
+                .Select(long.Parse)
+                .ToArray();
+
+            var sum = cpuTimes.Sum();
+
+            statsList.Add(cpuTimes);
+            sumList.Add(sum);
+        }
+
+        return (statsList.ToArray(), sumList.ToArray());
+    }
+
+    #endregion
+
+    #region Memory
+
+    public async Task ClearCachedMemory()
+    {
+        await File.WriteAllTextAsync("/proc/sys/vm/drop_caches", "3");
+    }
+
+    public async Task<MemoryUsageDetails> GetMemoryUsage()
+    {
+        var details = new MemoryUsageDetails();
+
+        var lines = await File.ReadAllLinesAsync("/proc/meminfo");
+
+        foreach (var line in lines)
+        {
+            // We want to ignore all non kilobyte values
+            if (!line.Contains("kB"))
+                continue;
+
+            // Split the line up so we can extract the id and the value
+            // to map it to the model field
+            var parts = line.Split(":");
+
+            var id = parts[0];
+            var value = parts[1]
+                .Replace("kB", "")
+                .Trim();
+
+            if (!long.TryParse(value, out var longValue))
+                continue;
+
+            var bytes = ByteConverter.FromKiloBytes(longValue).Bytes;
+
+            switch (id)
+            {
+                case "MemTotal":
+                    details.Total = bytes;
+                    break;
+
+                case "MemFree":
+                    details.Free = bytes;
+                    break;
+
+                case "MemAvailable":
+                    details.Available = bytes;
+                    break;
+
+                case "Cached":
+                    details.Cached = bytes;
+                    break;
+
+                case "SwapTotal":
+                    details.SwapTotal = bytes;
+                    break;
+
+                case "SwapFree":
+                    details.SwapFree = bytes;
+                    break;
+            }
+        }
+
+        return details;
+    }
+
+    #endregion
+
+    #region Disks
+
+    public async Task<DiskUsageDetails[]> GetDiskUsages()
+    {
+        var details = new List<DiskUsageDetails>();
+
+        // First we need to check which mounts actually exist
+        var diskDevices = new Dictionary<string, string>();
+        string[] ignoredMounts = ["/boot/efi", "/boot"];
+
+        var mountLines = await File.ReadAllLinesAsync("/proc/mounts");
+
+        foreach (var mountLine in mountLines)
+        {
+            var parts = mountLine.Split(" ");
+
+            var device = parts[0];
+            var mountedAt = parts[1];
+
+            // We only want to handle mounted physical devices
+            if (!device.StartsWith("/dev/"))
+                continue;
+
+            // Ignore certain mounts which we dont want to show
+            if (ignoredMounts.Contains(mountedAt))
+                continue;
+
+            diskDevices.Add(device, mountedAt);
+        }
+
+        foreach (var diskMount in diskDevices)
+        {
+            var device = diskMount.Key;
+            var mount = diskMount.Value;
+            
+            var statusCode = Syscall.statvfs(mount, out var statvfs);
+
+            if (statusCode != 0)
+            {
+                var error = Stdlib.GetLastError();
+
+                Logger.LogError(
+                    "An error occured while checking disk stats for mount {mount}: {error}",
+                    mount,
+                    error
+                );
+                
+                continue;
+            }
+
+            // Source: https://man7.org/linux/man-pages/man3/statvfs.3.html
+            var detail = new DiskUsageDetails()
+            {
+                Device = device,
+                MountPath = mount,
+                DiskTotal = statvfs.f_blocks * statvfs.f_frsize,
+                DiskFree = statvfs.f_bfree * statvfs.f_frsize,
+                InodesTotal = statvfs.f_files,
+                InodesFree = statvfs.f_ffree
+            };
+            
+            details.Add(detail);
+        }
+
+        return details.ToArray();
+    }
+
+    #endregion
 }

MoonlightServers.Daemon/Helpers/OwnProcessHelper.cs

@@ -1,36 +0,0 @@
-using System.Diagnostics;
-using MoonCore.Attributes;
-
-namespace MoonlightServers.Daemon.Helpers;
-
-[Singleton]
-public class OwnProcessHelper
-{
-    public long GetMemoryUsage()
-    {
-        var process = Process.GetCurrentProcess();
-        var bytes = process.PrivateMemorySize64;
-
-        return bytes;
-    }
-    
-    public TimeSpan GetUptime()
-    {
-        var process = Process.GetCurrentProcess();
-        var uptime = DateTime.Now - process.StartTime;
-
-        return uptime;
-    }
-
-    public int CpuUsage()
-    {
-        var process = Process.GetCurrentProcess();
-        var cpuTime = process.TotalProcessorTime;
-        var wallClockTime = DateTime.UtcNow - process.StartTime.ToUniversalTime();
-
-        var cpuUsage = (int)(100.0 * cpuTime.TotalMilliseconds / wallClockTime.TotalMilliseconds /
-                             Environment.ProcessorCount);
-
-        return cpuUsage;
-    }
-}

MoonlightServers.Daemon/Http/Controllers/Statistics/StatisticsApplicationController.cs

@@ -1,32 +0,0 @@
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-using MoonlightServers.Daemon.Helpers;
-using MoonlightServers.DaemonShared.DaemonSide.Http.Responses.Statistics;
-
-namespace MoonlightServers.Daemon.Http.Controllers.Statistics;
-
-// This controller hosts endpoints for the statistics for the daemon application itself
-
-[Authorize]
-[ApiController]
-[Route("api/statistics/application")]
-public class StatisticsApplicationController : Controller
-{
-    private readonly OwnProcessHelper ProcessHelper;
-
-    public StatisticsApplicationController(OwnProcessHelper processHelper)
-    {
-        ProcessHelper = processHelper;
-    }
-
-    [HttpGet]
-    public async Task<StatisticsApplicationResponse> Get()
-    {
-        return new StatisticsApplicationResponse()
-        {
-            Uptime = ProcessHelper.GetUptime(),
-            MemoryUsage = ProcessHelper.GetMemoryUsage(),
-            CpuUsage = ProcessHelper.CpuUsage()
-        };
-    }
-}

MoonlightServers.Daemon/Http/Controllers/Statistics/StatisticsController.cs

@@ -0,0 +1,54 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using MoonlightServers.Daemon.Helpers;
+using MoonlightServers.DaemonShared.DaemonSide.Http.Responses.Statistics;
+
+namespace MoonlightServers.Daemon.Http.Controllers.Statistics;
+
+[Authorize]
+[ApiController]
+[Route("api/statistics")]
+public class StatisticsController : Controller
+{
+    private readonly HostSystemHelper HostSystemHelper;
+
+    public StatisticsController(HostSystemHelper hostSystemHelper)
+    {
+        HostSystemHelper = hostSystemHelper;
+    }
+
+    [HttpGet]
+    public async Task<StatisticsResponse> Get()
+    {
+        var response = new StatisticsResponse();
+
+        var cpuUsage = await HostSystemHelper.GetCpuUsage();
+
+        response.Cpu.Model = cpuUsage.Model;
+        response.Cpu.Usage = cpuUsage.OverallUsage;
+        response.Cpu.UsagePerCore = cpuUsage.PerCoreUsage;
+
+        var memoryUsage = await HostSystemHelper.GetMemoryUsage();
+
+        response.Memory.Available = memoryUsage.Available;
+        response.Memory.Cached = memoryUsage.Cached;
+        response.Memory.Free = memoryUsage.Free;
+        response.Memory.Total = memoryUsage.Total;
+        response.Memory.SwapTotal = memoryUsage.SwapTotal;
+        response.Memory.SwapFree = memoryUsage.SwapFree;
+
+        var diskDetails = await HostSystemHelper.GetDiskUsages();
+
+        response.Disks = diskDetails.Select(x => new StatisticsResponse.DiskData()
+        {
+            Device = x.Device,
+            MountPath = x.MountPath,
+            DiskFree = x.DiskFree,
+            DiskTotal = x.DiskTotal,
+            InodesFree = x.InodesFree,
+            InodesTotal = x.InodesTotal
+        }).ToArray();
+        
+        return response;
+    }
+}

MoonlightServers.Daemon/Http/Controllers/Statistics/StatisticsHostController.cs

@@ -1,30 +0,0 @@
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-using MoonlightServers.Daemon.Helpers;
-using MoonlightServers.DaemonShared.DaemonSide.Http.Responses.Statistics;
-
-namespace MoonlightServers.Daemon.Http.Controllers.Statistics;
-
-// This controller hosts endpoints for the statistics for host system the daemon runs on
-
-[Authorize]
-[ApiController]
-[Route("api/statistics/host")]
-public class StatisticsHostController : Controller
-{
-    private readonly HostSystemHelper HostSystemHelper;
-
-    public StatisticsHostController(HostSystemHelper hostSystemHelper)
-    {
-        HostSystemHelper = hostSystemHelper;
-    }
-
-    [HttpGet]
-    public async Task<StatisticsHostResponse> Get()
-    {
-        return new()
-        {
-            OperatingSystem = HostSystemHelper.GetOsName()
-        };
-    }
-}

MoonlightServers.Daemon/Models/CpuUsageDetails.cs

@@ -0,0 +1,8 @@
+namespace MoonlightServers.Daemon.Models;
+
+public class CpuUsageDetails
+{
+    public string Model { get; set; }
+    public double OverallUsage { get; set; }
+    public double[] PerCoreUsage { get; set; }
+}

MoonlightServers.Daemon/Models/DiskUsageDetails.cs

@@ -0,0 +1,11 @@
+namespace MoonlightServers.Daemon.Models;
+
+public class DiskUsageDetails
+{
+    public string Device { get; set; }
+    public string MountPath { get; set; }
+    public ulong DiskTotal { get; set; }
+    public ulong DiskFree { get; set; }
+    public ulong InodesTotal { get; set; }
+    public ulong InodesFree { get; set; }
+}

MoonlightServers.Daemon/Models/MemoryUsageDetails.cs

@@ -0,0 +1,11 @@
+namespace MoonlightServers.Daemon.Models;
+
+public class MemoryUsageDetails
+{
+    public long Total { get; set; }
+    public long Available { get; set; }
+    public long Free { get; set; }
+    public long Cached { get; set; }
+    public long SwapTotal { get; set; }
+    public long SwapFree { get; set; }
+}

MoonlightServers.DaemonShared/DaemonSide/Http/Responses/Statistics/StatisticsApplicationResponse.cs

@@ -1,8 +0,0 @@
-namespace MoonlightServers.DaemonShared.DaemonSide.Http.Responses.Statistics;
-
-public class StatisticsApplicationResponse
-{
-    public int CpuUsage { get; set; }
-    public long MemoryUsage { get; set; }
-    public TimeSpan Uptime { get; set; }
-}

MoonlightServers.DaemonShared/DaemonSide/Http/Responses/Statistics/StatisticsHostResponse.cs

@@ -1,6 +0,0 @@
-namespace MoonlightServers.DaemonShared.DaemonSide.Http.Responses.Statistics;
-
-public class StatisticsHostResponse
-{
-    public string OperatingSystem { get; set; }
-}

MoonlightServers.DaemonShared/DaemonSide/Http/Responses/Statistics/StatisticsResponse.cs

@@ -0,0 +1,36 @@
+namespace MoonlightServers.DaemonShared.DaemonSide.Http.Responses.Statistics;
+
+public class StatisticsResponse
+{
+    public CpuData Cpu { get; set; } = new();
+    public MemoryData Memory { get; set; } = new();
+
+    public DiskData[] Disks { get; set; } = [];
+
+    public record DiskData
+    {
+        public string Device { get; set; }
+        public string MountPath { get; set; }
+        public ulong DiskTotal { get; set; }
+        public ulong DiskFree { get; set; }
+        public ulong InodesTotal { get; set; }
+        public ulong InodesFree { get; set; }
+    }
+
+    public record MemoryData
+    {
+        public long Total { get; set; }
+        public long Available { get; set; }
+        public long Free { get; set; }
+        public long Cached { get; set; }
+        public long SwapTotal { get; set; }
+        public long SwapFree { get; set; }
+    }
+
+    public record CpuData
+    {
+        public string Model { get; set; }
+        public double Usage { get; set; }
+        public double[] UsagePerCore { get; set; }
+    }
+}

MoonlightServers.Frontend/Services/NodeService.cs

@@ -1,5 +1,6 @@
 using MoonCore.Attributes;
 using MoonCore.Helpers;
+using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics;
 using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Sys;
 
 namespace MoonlightServers.Frontend.Services;
@@ -18,4 +19,18 @@ public class NodeService
     {
         return await HttpApiClient.GetJson<NodeSystemStatusResponse>($"api/admin/servers/nodes/{nodeId}/system/status");
     }
+
+    public async Task<StatisticsResponse> GetStatistics(int nodeId)
+    {
+        return await HttpApiClient.GetJson<StatisticsResponse>(
+            $"api/admin/servers/nodes/{nodeId}/statistics"
+        );
+    }
+    
+    public async Task<DockerStatisticsResponse> GetDockerStatistics(int nodeId)
+    {
+        return await HttpApiClient.GetJson<DockerStatisticsResponse>(
+            $"api/admin/servers/nodes/{nodeId}/statistics/docker"
+        );
+    }
 }

MoonlightServers.Frontend/UI/Components/Nodes/UpdateNodePartials/OverviewNodeUpdate.razor

@@ -0,0 +1,218 @@
+@using MoonCore.Blazor.Tailwind.Components
+@using MoonCore.Blazor.Tailwind.Toasts
+@using MoonCore.Helpers
+@using MoonlightServers.Frontend.Services
+@using MoonlightServers.Shared.Http.Responses.Admin.Nodes
+@using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics
+
+@inject NodeService NodeService
+@inject ToastService ToastService
+@inject ILogger<OverviewNodeUpdate> Logger
+
+@implements IDisposable
+
+<LazyLoader Load="Load">
+
+    <div class="mb-3 mt-5 text-xl font-semibold">
+        Overview
+    </div>
+
+    <div class="grid grid-cols-1 lg:grid-cols-3 gap-5">
+        <div class="col-span-1 card card-body">
+            <div class="flex justify-between">
+                <p class="text-xl font-semibold text-slate-200">
+                    @Math.Round(Statistics.Cpu.Usage, 2)%
+                </p>
+                <i class="icon-cpu text-4xl text-primary"></i>
+            </div>
+            <div class="text-base text-slate-300">
+                <span class="truncate">
+                    CPU: @Statistics.Cpu.Model
+                </span>
+            </div>
+        </div>
+
+        <div class="col-span-1 card card-body">
+            <div class="flex justify-between">
+                <p class="text-xl font-semibold text-slate-200">
+                    @Formatter.FormatSize(Statistics.Memory.Total - Statistics.Memory.Available)
+                    /
+                    @Formatter.FormatSize(Statistics.Memory.Total)
+                </p>
+                <i class="icon-memory-stick text-4xl text-primary"></i>
+            </div>
+            <div class="text-base text-slate-300">
+                Memory
+            </div>
+        </div>
+
+        <div class="col-span-1 card card-body">
+            <div class="flex justify-between">
+                <div class="text-xl font-semibold text-slate-200">
+                    @Formatter.FormatSize(Statistics.Memory.SwapTotal - Statistics.Memory.SwapFree)
+                    /
+                    @Formatter.FormatSize(Statistics.Memory.SwapTotal)
+                </div>
+                <i class="icon-shapes text-4xl text-primary"></i>
+            </div>
+            <div class="text-base text-slate-300">
+                Swap
+            </div>
+        </div>
+    </div>
+
+    <div class="mb-3 mt-5 text-xl font-semibold">
+        CPU
+    </div>
+
+    <div class="card card-body grid grid-cols-1 lg:grid-cols-2 gap-y-2 gap-x-5">
+        @{
+            var i = 0;
+        }
+
+        @foreach (var usage in Statistics.Cpu.UsagePerCore)
+        {
+            var percentRounded = Math.Round(usage, 2);
+
+            <div class="flex flex-row items-center col-span-1">
+                <div class="text-sm text-slate-300 me-1.5 grow-0 flex flex-col">
+                    <span>#@(i)</span>
+                </div>
+                <div class="grow">
+                    <div class="progress bg-gray-750">
+                        <div style="width: @(usage)%"
+                             class="progress-bar h-3 @(GetBackgroundColorByPercent(percentRounded))"></div>
+                    </div>
+                </div>
+            </div>
+
+            i++;
+        }
+    </div>
+
+    <div class="mb-3 mt-5 text-xl font-semibold">
+        Disks
+    </div>
+
+    <div class="grid grid-cols-1 lg:grid-cols-3 gap-5">
+        @foreach (var disk in Statistics.Disks)
+        {
+            var usedPercent = Math.Round((disk.DiskTotal - disk.DiskFree) / (double)disk.DiskTotal * 100, 2);
+            var iNodesPercent = Math.Round((disk.InodesTotal - disk.InodesFree) / (double)disk.InodesTotal * 100, 2);
+
+            <div class="col-span-1 card card-body">
+                <div class="flex items-center">
+                    <div class="grow">
+                        <div class="progress bg-gray-750">
+                            <div style="width: @(usedPercent)%"
+                                 class="progress-bar h-3 @(GetBackgroundColorByPercent(usedPercent))"></div>
+                        </div>
+                    </div>
+                </div>
+                <div class="text-sm text-slate-300 mt-2.5 flex flex-col">
+                    <div>
+                        Device: <span class="font-semibold">@disk.Device</span> - Mounted at: <span class="font-semibold truncate">@disk.MountPath</span>
+                    </div>
+                    <div>
+                        Used: <span class="font-semibold">@Formatter.FormatSize(disk.DiskTotal - disk.DiskFree)</span>
+                        Total: <span class="font-semibold">@Formatter.FormatSize(disk.DiskTotal)</span>
+                    </div>
+                    <div>
+                        INodes: <span class="font-semibold">@(iNodesPercent)%</span>
+                    </div>
+                </div>
+            </div>
+        }
+    </div>
+    
+    <div class="mb-3 mt-5 text-xl font-semibold">
+        Docker
+    </div>
+
+    <div class="grid grid-cols-1 lg:grid-cols-3 gap-5">
+        <div class="col-span-1 card card-body">
+            <div class="flex justify-between">
+                <p class="text-xl font-semibold text-slate-200">
+                    @Formatter.FormatSize(DockerStatistics.ImagesUsed) (@Formatter.FormatSize(DockerStatistics.ImagesReclaimable) unused)
+                </p>
+                <i class="icon-gallery-horizontal-end text-4xl text-primary"></i>
+            </div>
+            <div class="text-base text-slate-300">
+                Images
+            </div>
+        </div>
+        
+        <div class="col-span-1 card card-body">
+            <div class="flex justify-between">
+                <p class="text-xl font-semibold text-slate-200">
+                    @Formatter.FormatSize(DockerStatistics.ContainersUsed) ( @Formatter.FormatSize(DockerStatistics.ContainersReclaimable) unused)
+                </p>
+                <i class="icon-container text-4xl text-primary"></i>
+            </div>
+            <div class="text-base text-slate-300">
+                Containers
+            </div>
+        </div>
+
+        <div class="col-span-1 card card-body">
+            <div class="flex justify-between">
+                <p class="text-xl font-semibold text-slate-200">
+                    @Formatter.FormatSize(DockerStatistics.BuildCacheUsed) (@Formatter.FormatSize(DockerStatistics.BuildCacheReclaimable) unused)
+                </p>
+                <i class="icon-hard-hat text-4xl text-primary"></i>
+            </div>
+            <div class="text-base text-slate-300">
+                Build Cache
+            </div>
+        </div>
+    </div>
+</LazyLoader>
+
+@code
+{
+    [Parameter] public NodeDetailResponse Node { get; set; }
+
+    private StatisticsResponse Statistics;
+    private DockerStatisticsResponse DockerStatistics;
+
+    private Timer? UpdateTimer;
+
+    private async Task Load(LazyLoader _)
+    {
+        Statistics = await NodeService.GetStatistics(Node.Id);
+        DockerStatistics = await NodeService.GetDockerStatistics(Node.Id);
+
+        UpdateTimer = new Timer(HandleUpdate, null, TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(3));
+    }
+
+    private async void HandleUpdate(object? _)
+    {
+        try
+        {
+            Statistics = await NodeService.GetStatistics(Node.Id);
+            DockerStatistics = await NodeService.GetDockerStatistics(Node.Id);
+            
+            await InvokeAsync(StateHasChanged);
+        }
+        catch (Exception e)
+        {
+            Logger.LogWarning("An error occured while fetching status update: {e}", e);
+            await ToastService.Danger("Unable to fetch status update", e.Message);
+        }
+    }
+    
+    private string GetBackgroundColorByPercent(double percent)
+    {
+        if (percent < 70)
+            return "bg-success";
+        else if (percent < 80)
+            return "bg-warning";
+        else
+            return "bg-danger";
+    }
+
+    public void Dispose()
+    {
+        UpdateTimer?.Dispose();
+    }
+}

MoonlightServers.Frontend/UI/Views/Admin/Nodes/Index.razor

@@ -8,12 +8,14 @@
 @using MoonCore.Blazor.Tailwind.Dt
 @using MoonCore.Blazor.Tailwind.Toasts
 @using MoonlightServers.Frontend.Services
+@using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics
 @using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Sys
 
 @inject HttpApiClient ApiClient
 @inject NodeService NodeService
 @inject AlertService AlertService
 @inject ToastService ToastService
+@inject ILogger<Index> Logger
 
 @attribute [Authorize(Policy = "permissions:admin.servers.nodes.get")]
 
@@ -31,7 +33,7 @@
 
 <DataTable TItem="NodeDetailResponse">
     <Configuration>
-        <Pagination TItem="NodeDetailResponse" ItemSource="LoadData" />
+        <Pagination TItem="NodeDetailResponse" ItemSource="LoadData"/>
 
         <DataTableColumn TItem="NodeDetailResponse" Field="@(x => x.Id)" Name="Id"/>
         <DataTableColumn TItem="NodeDetailResponse" Field="@(x => x.Name)" Name="Name">
@@ -44,86 +46,96 @@
         <DataTableColumn TItem="NodeDetailResponse" Field="@(x => x.Fqdn)" Name="Fqdn"/>
         <DataTableColumn TItem="NodeDetailResponse" Field="@(x => x.Fqdn)" Name="Status">
             <ColumnTemplate>
-                <LazyLoader Load="_ => LoadNodeStatus(context.Id)">
                 @{
-                        bool isFetched;
-                        NodeSystemStatusResponse? data;
-
-                        lock (Responses)
-                            isFetched = Responses.TryGetValue(context.Id, out data);
+                    var isFetched = StatusResponses.TryGetValue(context.Id, out var data);
                 }
 
                 @if (isFetched)
                 {
                     if (data == null)
                     {
-                            <span class="text-danger">
-                                <i class="icon-server-offg text-base me-1 align-middle"></i>
-                                <span class="align-middle">
+                        <div class="text-danger flex items-center">
+                            <i class="icon-server-off text-base me-1"></i>
+                            <span>
                                 API Error
                             </span>
-                            </span>
+                        </div>
                     }
                     else
                     {
                         if (data.RoundtripSuccess)
                         {
-                                <span class="text-success">
-                                    <i class="icon-check text-base me-1 align-middle"></i>
-                                    <span class="align-middle">Online (@(data.Version))</span>
-                                </span>
+                            <div class="text-success flex items-center">
+                                <i class="icon-check text-base me-1"></i>
+                                <span>Online (@(data.Version))</span>
+                            </div>
                         }
                         else
                         {
-                                <span class="text-danger">
-                                    <i class="icon-server-off text-base me-1 align-middle"></i>
-                                    <span class="align-middle">
+                            <div class="text-danger flex items-center">
+                                <i class="icon-server-off text-base me-1"></i>
+                                <span class="me-2">
                                     Error
+                                </span>
                                 <a @onclick="() => ShowErrorDetails(context.Id)" @onclick:preventDefault
                                    href="#" class="ms-1 text-gray-600">Details</a>
-                                    </span>
-                                </span>
+                            </div>
                         }
                     }
                 }
                 else
                 {
-                        <span class="text-gray-500">
+                    <div class="text-gray-500">
                         <i class="icon-loader text-base me-1 align-middle"></i>
                         <span class="align-middle">Loading</span>
-                        </span>
+                    </div>
                 }
-                </LazyLoader>
             </ColumnTemplate>
         </DataTableColumn>
         <DataTableColumn TItem="NodeDetailResponse"
+                         Name="Utilization"
                          HeaderCss="p-2 font-semibold text-left hidden xl:table-cell"
                          ColumnCss="p-2 text-left font-normal hidden xl:table-cell">
             <ColumnTemplate>
-                <div>
-                    <i class="icon-cpu text-lg me-1 align-middle text-primary"></i>
-                    <span class="align-middle">33% of 6 Cores</span>
+                @{
+                    var isFetched = Statistics.TryGetValue(context.Id, out var data);
+                }
+
+                @if (isFetched)
+                {
+                    if (data == null)
+                    {
+                        <div class="flex items-center text-danger">
+                            <i class="icon-server-off text-base me-1"></i>
+                            <span>
+                                API Error
+                            </span>
                         </div>
-            </ColumnTemplate>
-        </DataTableColumn>
-        <DataTableColumn TItem="NodeDetailResponse"
-                         HeaderCss="p-2 font-semibold text-left hidden xl:table-cell"
-                         ColumnCss="p-2 text-left font-normal hidden xl:table-cell">
-            <ColumnTemplate>
-                <div>
-                    <i class="icon-memory-stick text-lg me-1 align-middle text-primary"></i>
-                    <span class="align-middle">1.56GB / 64GB</span>
+                    }
+                    else
+                    {
+                        <div class="flex flex-row">
+                            <div class="flex items-center">
+                                <i class="text-primary text-base me-2 icon-cpu"></i>
+                                <span>@(Math.Round(data.Cpu.Usage))%</span>
                             </div>
-            </ColumnTemplate>
-        </DataTableColumn>
-        <DataTableColumn TItem="NodeDetailResponse"
-                         HeaderCss="p-2 font-semibold text-left hidden xl:table-cell"
-                         ColumnCss="p-2 text-left font-normal hidden xl:table-cell">
-            <ColumnTemplate>
-                <div>
-                    <i class="icon-hard-drive text-lg me-1 align-middle text-primary"></i>
-                    <span class="align-middle">78.68GB / 1TB</span>
+                        
+                            <div class="flex items-center ms-5">
+                                <i class="text-primary text-base me-2 icon-memory-stick"></i>
+                                <span>
+                                    @(Math.Round((data.Memory.Total - data.Memory.Free - data.Memory.Cached) / (double)data.Memory.Total * 100))%
+                                </span>
                             </div>
+                        </div>
+                    }
+                }
+                else
+                {
+                    <div class="flex items-center text-gray-500">
+                        <i class="icon-loader text-base me-1"></i>
+                        <span>Loading</span>
+                    </div>
+                }
             </ColumnTemplate>
         </DataTableColumn>
         <DataTableColumn TItem="NodeDetailResponse">
@@ -147,10 +159,60 @@
 {
     private DataTable<NodeDetailResponse> Table;
 
-    private Dictionary<int, NodeSystemStatusResponse?> Responses = new();
+    private Dictionary<int, NodeSystemStatusResponse?> StatusResponses = new();
+    private Dictionary<int, StatisticsResponse?> Statistics = new();
 
     private async Task<IPagedData<NodeDetailResponse>> LoadData(PaginationOptions options)
-        => await ApiClient.GetJson<PagedData<NodeDetailResponse>>($"api/admin/servers/nodes?page={options.Page}&pageSize={options.PerPage}");
+    {
+        Statistics.Clear();
+        StatusResponses.Clear();
+
+        var result = await ApiClient.GetJson<PagedData<NodeDetailResponse>>(
+            $"api/admin/servers/nodes?page={options.Page}&pageSize={options.PerPage}"
+        );
+
+        Task.Run(async () =>
+        {
+            foreach (var item in result.Items)
+            {
+                try
+                {
+                    Statistics[item.Id] = await NodeService.GetStatistics(item.Id);
+                }
+                catch (Exception e)
+                {
+                    Logger.LogWarning(
+                        "An error occured while fetching statistics for node {nodeId}: {e}",
+                        item.Id,
+                        e
+                    );
+
+                    Statistics[item.Id] = null;
+                }
+
+                await InvokeAsync(StateHasChanged);
+                
+                try
+                {
+                    StatusResponses[item.Id] = await NodeService.GetSystemStatus(item.Id);
+                }
+                catch (Exception e)
+                {
+                    Logger.LogWarning(
+                        "An error occured while fetching status for node {nodeId}: {e}",
+                        item.Id,
+                        e
+                    );
+
+                    StatusResponses[item.Id] = null;
+                }
+                
+                await InvokeAsync(StateHasChanged);
+            }
+        });
+
+        return result;
+    }
 
     private async Task Delete(NodeDetailResponse detailResponse)
     {
@@ -167,35 +229,9 @@
         );
     }
 
-    private Task LoadNodeStatus(int node)
-    {
-        Task.Run(async () =>
-        {
-            try
-            {
-                var status = await NodeService.GetSystemStatus(node);
-
-                lock (Responses)
-                    Responses[node] = status;
-            }
-            catch (Exception e)
-            {
-                lock (Responses)
-                    Responses[node] = null;
-            }
-
-            await InvokeAsync(StateHasChanged);
-        });
-
-        return Task.CompletedTask;
-    }
-
     private async Task ShowErrorDetails(int id)
     {
-        NodeSystemStatusResponse? data;
-
-        lock (Responses)
-            data = Responses.GetValueOrDefault(id);
+        var data = StatusResponses.GetValueOrDefault(id);
 
         if (data == null)
             return;

MoonlightServers.Frontend/UI/Views/Admin/Nodes/Update.razor

@@ -14,7 +14,7 @@
 @attribute [Authorize(Policy = "permissions:admin.servers.nodes.update")]
 
 <LazyLoader Load="Load">
-    <PageHeader Title="Update Node">
+    <PageHeader Title="@Node.Name">
         <a href="/admin/servers/nodes" class="btn btn-secondary">
             <i class="icon-chevron-left mr-1"></i>
             Back
@@ -29,12 +29,16 @@
         <HandleForm @ref="Form" Model="Request" OnValidSubmit="OnSubmit">
             
             <Tabs>
+                <Tab Name="Overview">
+                    <OverviewNodeUpdate Node="Node" />
+                </Tab>
+                
                 <Tab Name="Settings">
                     <GeneralNodeUpdate Request="Request"/>
                 </Tab>
 
                 <Tab Name="Allocations">
-                    <AllocationsNodeUpdate Node="Node" />
+                    <AllocationsNodeUpdate Node="Node"/>
                 </Tab>
 
                 <Tab Name="Advanced Settings">

MoonlightServers.Shared/Http/Responses/Admin/Nodes/Statistics/DockerStatisticsResponse.cs

@@ -0,0 +1,15 @@
+namespace MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics;
+
+public class DockerStatisticsResponse
+{
+    public string Version { get; set; }
+
+    public long ImagesUsed { get; set; }
+    public long ImagesReclaimable { get; set; }
+    
+    public long ContainersUsed { get; set; }
+    public long ContainersReclaimable { get; set; }
+    
+    public long BuildCacheUsed { get; set; }
+    public long BuildCacheReclaimable { get; set; }
+}

MoonlightServers.Shared/Http/Responses/Admin/Nodes/Statistics/StatisticsResponse.cs

@@ -0,0 +1,36 @@
+namespace MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics;
+
+public class StatisticsResponse
+{
+    public CpuData Cpu { get; set; }
+    public MemoryData Memory { get; set; }
+
+    public DiskData[] Disks { get; set; }
+
+    public record DiskData
+    {
+        public string Device { get; set; }
+        public string MountPath { get; set; }
+        public ulong DiskTotal { get; set; }
+        public ulong DiskFree { get; set; }
+        public ulong InodesTotal { get; set; }
+        public ulong InodesFree { get; set; }
+    }
+
+    public record MemoryData
+    {
+        public long Total { get; set; }
+        public long Available { get; set; }
+        public long Free { get; set; }
+        public long Cached { get; set; }
+        public long SwapTotal { get; set; }
+        public long SwapFree { get; set; }
+    }
+
+    public record CpuData
+    {
+        public string Model { get; set; }
+        public double Usage { get; set; }
+        public double[] UsagePerCore { get; set; }
+    }
+}